The Double Helix Character Descriptions

Lawrence Bragg - This character is the director of the Cavendish lab and one of the founders of crystallography.

Erwin Chargaff - This character is an expert in DNA and the first to propose the correct pairing of the four base molecules of its structure: adenine pairing with thymine and guanine pairing with cytosine.

Francis Crick - This character is twelve years older than Watson and is described by his younger colleague as ' 'almost totally unknown" and ' 'often not appreciated."

Rosalind Franklin - This character is trained in crystallography and uses X rays of DNA to try to determine its structure, as opposed to experimental model building.

Linus Pauling - This character is a chemist at the California Institute of Technology (Cal Tech) in Pasadena, California and is considered one of the world's foremost scientists.